<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>javascript</title>
  <style>
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box
    }
    body {
      font-size: 14px;
      padding: 20px;
    }
    ul li {
      line-height: 30px;
    }
  </style>
</head>
<body>
  <ul>
    <li></li>
  </ul>
</body>
<script src="https://cdn.bootcss.com/vue/2.6.8/vue.js"></script>
<script>
   let module = (function() {
     let name = 'zhangli';
     let age = 30;
     function getName() {
       return name
     }
     function getAge() {
       return age
     }
     return {
       getName,
       getAge
     }
   })()
   var module1 = (function(mod) {
     mod.m3 = function() {
       return '新数据'
     }
     return mod
   })(module)
   console.log(module1)
</script>
</html>